2003221212122 has 32 divisors (see below), whose sum is σ = 3319196255760. Its totient is φ = 901063595520.

The previous prime is 2003221212103. The next prime is 2003221212169. The reversal of 2003221212122 is 2212121223002.

It can be written as a sum of positive squares in 8 ways, for example, as 596646560041 + 1406574652081 = 772429^2 + 1185991^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2003221212094 and 2003221212103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5621003 + ... + 5966750.

Almost surely, 2^{2003221212122} is an apocalyptic number.

2003221212122 is a deficient number, since it is larger than the sum of its proper divisors (1315975043638).

2003221212122 is a wasteful number, since it uses less digits than its factorization.

2003221212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11587938.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 2003221212122 its reverse (2212121223002), we get a palindrome (4215342435124).

The spelling of 2003221212122 in words is "two trillion, three billion, two hundred twenty-one million, two hundred twelve thousand, one hundred twenty-two".